Interrupter



p 1934- K. SCHIWEIZER 1,973,359

INTERRUBTER Filed March 17, 1933 j Patented Sept. 11, 1934 UNITED STATES PATENT. OFFICE Robert Bosch Aktiengesellschaft,

Germany Stuttgart,

Application March 17, 1933, Serial No. 661,380 In Germany April 25, 1932 4 Claims.

The present invention relates to an arrangement for adjusting parts of an interrupter by means of an eccentric pin having a slotted head. In the known arrangements the head has an eccentrically mounted pin, which is revolubly mounted and centrally guided in the stationary part, for example, the base-plate of .the interrupter, whilst the head is revoluble about the axis of the pin in a slot in the part of the interrupter to be adjusted. The slot must of course have a width equal to the diameter of the head, and a length equal to the diameter, plus the distance between the axes of the pin and the head. In many interrupters, particularly in multiple interrupters, there is not suflicient space on the adjustable part for such a slot. This drawback is avoided, according to the invention, by the slotted head being rev olubly mounted in the adjustable part, whilst the pin mounted eccentrically to the head is guided in a slot in the stationary part.

An example of construction of the invention is illustrated in the accompanying drawing, in which:--

Figure 1 is a plan view of an interrupter.

Figure 2 a section on the line 22 of Fig. 1.

Figures 3 and 4 views of portions of the interrupter.

In the drawing, 1 is the stationary base-plate of a multiple interrupter. Upon it are mounted the actual interrupter plates 2 of a number of interrupters, one of which is shown in the drawing. A pin 3 is secured to the plate 2, and ,on the pin the interrupter lever 4 and the supporting plate 5 of the fixed interrupter contact 6 are arranged in known manner so as to be capable of rocking.

The plate 2 can be rocked on a pin '7 fixed in the plate 1. A slotted head 8 having a pin 9 mounted eccentrically thereto serves for causing this rocking movement. The head 8 is centrally guided in the plate 2 in a circular hole 13, whilst the eccentric pin 9 projects into a slot 10 in the base-plate 1. Two screws passing through slots 11 in the plate 2. and which can be screwed into'the plate 1, .serves for retaining .the plate 2 in position.

The rocking of the plate 5 carrying the stationary interrupter contact is efiected in the same way by means of a slotted head 12, which is guided centrally in the hole 14 in the plate 5, and has an eccentrically mounted pin 15 projecting into a slot 16 in the plate 2.- The heads 8 and -12 are each prevented from falling out by part, because the head of the screw can vbe made of small diameter, and a slot is not necessary as hitherto in the adjustable part but only a hole which corresponds to the crosssection of the head. The advantage is more particularly useful in multiple interrupter-s, in which several interrupters are mounted on one base-plate which have all to be adjusted in relation to the base-plate, and on which, furthermore, the fixed contacts have also to be adjusted.

I declare that what I claim is:

1. In an interrupter for an electric ignition device having relatively adjustable parts, a part having a slot formed therein, a smaller part having an opening of circular section therein, and a head located in the opening in said smaller part and rotatable about its own axis, said head having an eccentric pin extending into said slot in the other part.

2. In an interrupter for an electric ignition device having relatively adjustable parts, a part having a slot formed therein, a smaller part having an opening of circular section therein, a head located in the opening in said smaller part and rotatable about its own axis, said head having an eccentric pin extending into said slot in the other part and a pivotal connection between said parts.

3. In an interrupter for an electric ignition device having relatively adjustable parts, a part having a slot formed therein, a smaller part having a cylindrical opening therein and an annular recess concentric with and behind said opening and a head located in said opening in the smaller part and having a collar engaging in said annular recess and an eccentric pin extending from the head into the slot in the other part, said head being rotatable about its own axis in said opening.

4. In an interrupter for an electric ignition device, a supporting plate having a slot therein, a plate bearing a fixed contact pivotally mounted on the supporting plate and having a cylindrical opening therein, a head angularly displaceable in the opening in said plate and having an eccentric pin extending into the slot in said supporting plate for adjusting the relative angular positions of said plates.

KARL SCHWEIZER. 

